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Old 07-17-2015, 09:07 AM   #29
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My guess is that the problem might be the air conditioner. I would assume that 20amp breaker is on the AC circuit. Somehow you may have developed a dead short in the unit. Dont know how or why but what else in the coach would be protected by a remote 20amp breaker panel. You could run a continuity test on the out going wire from that panel and see if its the feed for the AC. My guess is youve got one piece of romex exiting that panel and its headed up to the AC unit.

Mike
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Old 07-17-2015, 09:12 AM   #30
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Might not be a dead short but I bet its a problem with the unit somehow.
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Old 07-17-2015, 09:20 AM   #31
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Have you tried running the air conditioner off of shore power? Or better yet, what happens when youre plugged into shore power and the 20amp breaker is in the on position?
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Old 07-17-2015, 09:37 AM   #32
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Yep, AC and the rest of the 110v system work great off shore power. We were just camping last weekend.
Good question regarding the breaker when I'm on shore power. I only have an extension cord on the moho in my driveway but i can run the AC for a minute or two off of it. I'll test that breaker to see if its tied to the AC while on shore. Intersting thought.

Brad, I'll see if I can pull some volt readings off the wiring tonight. And, YEP, labeled my manual with the 20A location.
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Old 07-17-2015, 10:01 AM   #33
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Just some interesting ponderings.. I have a 50A breaker located on the genny that's supposed to be a 30A.. I have a 20A breaker in-line on the powercord between the genny and the receptical.. And, I still have my distribution panel that really should be doing the job of the other 2.
I've got redunancy everywhere and they're all the wrong amperage.. Geez..
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Old 07-17-2015, 10:07 AM   #34
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[QUOTE
I betting your paycheck that the problem is the 20 amp breaker or the cord

Brad[/QUOTE]

Brad, there's nothing left of my paycheck. It all went into exhaust and new brakes! Might have enough to buy a new breaker if I'm lucky.. Maybe..
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Old 07-17-2015, 11:07 AM   #35
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Quote:
Originally Posted by bpg_austin View Post
Yep, AC and the rest of the 110v system work great off shore power. We were just camping last weekend.
Good question regarding the breaker when I'm on shore power. I only have an extension cord on the moho in my driveway but i can run the AC for a minute or two off of it. I'll test that breaker to see if its tied to the AC while on shore. Intersting thought.
When you're on shore power isn't the generator cord unplugged from the motorhome?

Maybe I'm mistaken but I thought either your shore power cord was plugged into the receptacle or the generator was plugged into the receptacle. Not both at the same time. Assuming that's the case then the 20 amp breaker should have no effect while on shore power.

Quote:
Brad, I'll see if I can pull some volt readings off the wiring tonight. And, YEP, labeled my manual with the 20A location.
Sounds good!
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Old 07-17-2015, 11:10 AM   #36
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Quote:
Originally Posted by bpg_austin View Post
I betting your paycheck that the problem is the 20 amp breaker or the cord

Brad
Brad, there's nothing left of my paycheck. It all went into exhaust and new brakes! Might have enough to buy a new breaker if I'm lucky.. Maybe..
I know that feeling
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Old 07-17-2015, 11:49 AM   #37
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Yes Brad, its either plugged into shore power or the receptacle. I only have 1 cable leaving the 20A breaker. flipping the breaker while on shore power shouldn't do anything unless there's a junction somewhere I don't know about and the AC is tied in. Guess its possible. Will report back.
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Old 07-17-2015, 12:04 PM   #38
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DANG!!!!! I was sure that was the answer. But if the AC works fine on shore power then my theory is full of .......aluminum. Well, I would still find out if that breaker feeds the AC or not cause it seems to be the variable here.
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Old 07-17-2015, 12:08 PM   #39
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I'm open to all theories. And appreciate anyone
who takes the time to help.
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Old 07-17-2015, 12:17 PM   #40
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Maybe I'm mistaken but I thought either your shore power cord was plugged into the receptacle or the generator was plugged into the receptacle. Not both at the same time. Assuming that's the case then the 20 amp breaker should have no effect while on shore power.


If the breaker is "up-stream" or after the main distribution panel it would have an effect on what ever its feeding regardless of whether its on shore power or generator. It makes no sense that it would be before the distribution panel (though as we all know lots of things on these rigs dont make sense) because if it was before the panel it would reduce your total amp draw to 20amps for the whole AC system in the rig. Im thinking it is after the panel, or there is a junction made before the panel, one leg going to the breaker and up to the AC and the other leg in the junction feeding the distribution panel.

What all is inside that 20amp breaker panel, one in one out, one in two out, etc?
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Old 07-17-2015, 01:04 PM   #41
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Name:	ImageUploadedByAirstream Forums1437159632.597989.jpg
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ID:	243193certainly looks like I have a master 20a breaker doesn't it.. At least while on the genny. I will crawl underneath tonight and do some wire chasing along with voltage testing. Mayco, I believe that 20a breaker is 1 in/1 out but will take a pic with the cover off when I'm home. Crazy.
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Old 07-17-2015, 01:15 PM   #42
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Head scratcher
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